Compilare: main.cpp:2: warning: ignoring '#pragma GCC optimiz' [-Wunknown-pragmas] 2 | #pragma GCC optimiz("O4") | main.cpp:3: warning: ignoring '#pragma GCC optimiz' [-Wunknown-pragmas] 3 | #pragma GCC optimiz("unroll-loops") | main.cpp: In function 'int main()': main.cpp:51:22: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 51 | for(j = 0; j < divi.size(); j ++) | ~~^~~~~~~~~~~~~ main.cpp:54:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(k = j + 1; k < divi.size(); k ++) | ~~^~~~~~~~~~~~~